package shoppersservlets;

import infraestructura.PersistenceManager;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import modelo.LineaDePedido;
import modelo.Pedido;
import modelo.Product;
import modelo.User;

@WebServlet(name = "FinalCheckout", urlPatterns = {"/finalcheckout"})
public class FinalCheckout extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {                
            User user = (User) request.getAttribute("user");            
            Cookie[] cookieArray = request.getCookies();
            PersistenceManager mang = PersistenceManager.getPersistenceManager(getServletContext().getInitParameter("persistenceMethod"));
            user.setId(mang.createUser(user));
            Pedido pedido = new Pedido(user);            
            boolean errorState = false;
            for (Cookie oneCookie : cookieArray) {
                if (oneCookie.getName().equals("JSESSIONID")) {
                    continue;
                }
                Product product = mang.getProduct(Integer.parseInt(oneCookie.getName()));
                Integer requested = Integer.parseInt(oneCookie.getValue());
                if (requested > product.getStock()) {
                    request.getRequestDispatcher("./WEB-INF/failedcheckout.jsp").forward(request, response);
                    errorState = true;
                    break;
                } else {
                    pedido.addLine(product, requested);
                }
            }
            if (!errorState){
            request.setAttribute("pedidoId", mang.addPedido(pedido));
            request.getRequestDispatcher("./WEB-INF/successfulcheckout.jsp").forward(request, response);
            for(LineaDePedido linea:pedido.getLineasDelPedido()){
                mang.updateStock(linea.getProducto().getId(), linea.getCantidad());
            }
            
            }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP
     * <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP
     * <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
